Marco Rubio continually loses his way and forgets that the main stream of American society is feeling alienated and disenfranchised. And it seems that Rubio can be bought and will change, chameleon-like, depending on who he is talking to and what he hopes to benefit from them.
Of course, the biggest mistake he made is with the Gang of Eight and the amnesty program. He made common cause with Democrats who want lots of new Latino voters who will be Democrats for life if they are given amnesty. He did this to unite with big business, which means donors, who want cheap labor. He ignored the fact that millions of illegal immigrants are flooding the country, taking jobs that Americans will do, taking lots of government services, and disrupting societies and standards. There is no attempt to assimilate, only to impose. Rubio later tried to explain after it cost him his credibility, but he was caught lying. His believability has sunk to new lows, and now he has decided to throw in with another group that is not interested in assimilating. He is simply digging a bigger and bigger hole.
Rubio against U.S. citizens again, page 2:

I don’t Muslim ISIS Terrorists should be banned from down range 155 MM artillery fire. The more of them the better.
You are actually more sick in the head than I first thought. Get help quick before they come to take you away.
why do you thbink they hate trump he might tell the truth about them
No it it not there going to murder more people and will continue to do so
That’s why this$#%&!@*clown need to get the$#%&!@*out
== send them back — take Rubio with you ==
Is he nuts?
Someone needs to kill jerry, such stupid statements
And Rubio.. Maybe. You think it is immortal not allowing them to rape our children and women and killing our humans how stupid are you…
No Gaith they don”t.
WE Should ban Muslims from out country.